baber/WOPTO huggingface dataset:
Patent GB-670473-A (GB)
Title: Improvements in or relating to reflex light reflectors
IPC: G02B5/128
Filed: 1949-11-23
Abstract: 670,473. Reflex reflectors. ROLLINSON, E. W. (Minnesota Mining & Manufacturing Co.). Nov. 23, 1949, No.. 30022/49. Class 97 (i). [Also in Group VIII] A reflex reflector has a single layer of transponent spheres whose refractive index is from 1.85 to 1.95 partially embedded in a reflective layer contacting the inner surfaces of the spheres and is characterized in that the reflective layer is formed of a transparent material admixed with smaller proportions, exceeding one per cent (by weight relative to the total) of reflective metallic flake pigment and transparent colour pigment, the metallic flakes being oriented in proximity to each embedded sphere surface so as to fan toward it, and the properties of the pigments being correlated so as to provide effective coloration and high brilliancy of reflex-reflected light. The reflector shown comprises several transparent spheres 25 of glass having a refractive index approximately equal to 1.90, partially embedded in a bonding layer 24, coated on a layer 23. This layer 23 is applied to a coating 22 which is cast on a sheet 21 and facilitates stripping thereof. The coatings 23, 24 are each composed of a transparent material containing a mixture of a finely-divided aluminium flake pigment and transparent colour pigment and the spheres are pressed into the coating 24, whereby the aluminium flakes face towards the spheres. The sheet 21 may be prepared by knife-coating a highly calendered Fourdrinier paper with a 40 per cent solution of isobutyl methacrylate polymer in xylol solvent. Thereafter, layer 22 is applied in two steps. Firstly; the dried paper is knife coated with a 10 per cent solution of polyvinyl butyral polymer in ethylene-glycol monoethyl-ether solvent and is then heated for one hour at 140‹ F. An overcoat of 12.5 per cent polyvinyl butyral polymer and 4.2 per cent of tricesyl phosphate plasticizer in the same solvent is then applied and dried. Coating 23 is then applied using a wet casting weight of 12-14 grains per 24 square inches and consists of 61.5 per cent of a solution of thermo-setting urea formaldehyde resin in a volatile solvent; 30.8 per cent heavy blown castor oil; 5 per cent ethylene-glycol monoethyl-ether; 7.7 per cent blue phthalocyanine pigment and 5 per cent aluminium pigment. This coating is dried and cured. Using the same mixture and a wet casting weight of 12-17 grains per 24 square inches, the coating 24 is then applied and the spheres 25 are pressed therein. Instead of using two coatings 23, 24, only one may be applied. Mixtures of reflective pigments and mixtures of transparent colour pigments may be used. The transparent material of layers 23, 24 may be dyed and the spheres 25 may be tinted. Reference has been directed by the Comptroller to Specification 556,935.
Patent GB-1524602-A (GB)
Title: Vulcanizates
IPC: C08L21/00
Filed: 1976-07-20
Abstract: The composition contains a mixture of     a) thermoplastic polyolefin resin and b) monoolefin copolymer rubber which is vulcanised and of which at most a small proportion remains unvulcanised.  The rubber is a copolymer of     a) ethylene or propylene, b) at least one further  alpha -olefin of the formula CH2=CHR, in which R is alkyl having 1 to 12 carbon atoms, and optionally   c) a small amount of at least one copolymerisable diene.   The weight Wp of the thermoplastic polyolefin resin, the weight WR of the monoolefin copolymer rubber and the weight WO of the extender oil which may be present satisfy the conditions given in Claim 1. The composition can be processed in an internal mixer to give a product which forms a continuous sheeted-out compound in a roll mill if the resin phase is molten. The vulcanised rubber contains a maximum of 3% by weight of rubber which can be extracted by cyclohexane at 23 DEG C or has a crosslinking density of greater than 7 x 10<-5> mol/ml of rubber. The composition is prepared by mixing the unvulcanised constituents and at least one vulcanising agent at at least the softening point of the resin and continuously kneading (compounding) the mixture at the vulcanisation temperature.
Patent GB-667578-A (GB)
Title: Improvements in or relating to the continuous or semi-continuous casting of metals
IPC: B22D11/124
Filed: 1949-11-24
Abstract: 667,578. Continuous casting machines. CHADWICK, R., HOBBS, J. F., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Nov. 24, 1950 [Nov. 24, 1949], No. 30146/49. Class 83 (i). Means for effecting limited direct cooling of a casting 1 emerging fron the mould 2 of a continuous casting-machine comprise! a spray of coolant liquid from a ring 3 and two spaced compressed air sprays from rings 4, 5, the air sprays acting in opposed directions so that the coolant is stripped fron. the casting at a substantially constant level A-A between the positions of impingement of the two air sprays. The stripped coolant is carried away by an annular screen 6 between the two rings 4 and 5 and substantially level with the lower air spray.
Patent GB-304711-A (GB)
Title: Improvements in photographic apparatus
IPC: G03B35/00
Filed: 1927-11-12
Abstract: 304,711. Dieterich, L. M. Nov. 12, 1027. Relief effects in kinematographic images, producing. - With the object of producing the effect ot relief in photographs, a portion of the lens is moved axially during exposure, either while the lens remains stationary or is itself moved axially, in such a manner that while focussing on different planes of the object the size of the image is unaltered, all parts of the object being photographed sharply in focus. The invention is described in connection with kinematographic cameras. A lens system consisting of four lenses 26 - - 29 is mounted on a circular plate 30 which mav be turned about an axle 16 to bring the lens opposite the aperture 38 for view-finding ; the lens system having a lens 27 arranged to be moved axially by the arm 44 mounted on a sleeve 47. On the shaft 16 which actuates the film changing device and the shutter 23 is fitted a cam disc 55 for the operation of the sleeve 47 against the action of a spring 56, and the consequent moving of the lens 27 during the exposure, whereby successive object planes are focussed on the film. The whole lens system is designed so that the size of the images remain constant during such movement, as described in Specification 304,703. In front of the lens system, is arranged a four bladed diaphragm, each blade of which is mounted to slide in guides, so that the size of the opening may be varied during exposure in accordance with the movement of the lens 27, This movement of each blade is effected from the peripheral cam 66 on the shaft 16 through levers and springs as shown.
Patent GB-234049-A (GB)
Title: Improvement in ovens or furnaces
IPC: F27B5/00
Filed: 1924-12-18
Abstract: 234,049. Cannon, H. B. May 14, 1924, [Convention date]. Liquid-fuel furnaces.-A furnace or oven, particularly suitable for porcelain-enamelled ware is heated partly by combustion flues 13 arranged within the heating chamber 6 and spaced from the side walls 8 thereof, and partly by flues beneath the hearth 7. Horizontal and wedgeshaped baffles 18. 34, respectively, are provided in the flues 13, the latter being arranged immediately in front of liquid-fuel burners 21, to which fuel and compressed air are fed through valved pipes 24, 25, and which are disposed within a wind box 23 supplied with secondary air through a valved pipe 26. The hot gases pass round the baffles 18 and escape from the flues 13 into a transverse channel 29 communicating with a baffled flue beneath the hearth 7, the latter flue discharging, at the rear end, into the stack. The hearth 7 and the walls of the flues 13 are formed of silicon carbide while the baffles in the flue below the hearth, are constructed of refractory material having high heat-storing properties. Between the flues 13 and the hearth 7 are arranged perforated screens 27 to prevent direct exposure of the work to the heat radiated from the inner walls of the flues. The side walls 8 of the furnace are inclined, as shown, and the roof 11 arched, in order that the heat radiated from the top and outer walls of the flues 13 may be reflected on to the hearth 7. An observation aperture 22, covered by a mica disc 22<a>, is provided in connection with each of the flues 14b leading from the heating flues 13 to the channel 29. Specification 186,639 is referred to.
Patent GB-468665-A (GB)
Title: Improvements in or relating to electron discharge apparatus
IPC: H01J43/16
Filed: 1936-01-08
Abstract: 468,665. Electron multipliers. WEISS, G. Jan. 8, 1936, Nos. 30639, 30640, and 30641. Convention dates, Jan. 8, 1935, Feb. 1, 1935, and May 24, 1935. Divided out of 471,800. [Class 39 (i)] A multiplier comprises a photo-electric cathode, an anode, and a single secondary emission electrode pervious to electrons and arranged in the path of the electron stream. As shown, a fine-meshed grid or foil 1 of silver coated with caesium or potassium is arranged between a photo-electric cathode 2 and an anode 3. A magnetic focusing field axially of the system may be employed and the grid 1 may be heated. Electrostatic focusing or accelerating electrodes may be arranged between the main electrodes. An image of the cathode 2 may thus be focused on the grid 1. The Specification as open to inspection under Sect. 91 comprises also part of the subject-matter of Specification 471,800. This does not appear in the Specification as accepted.
Patent GB-1095618-A (GB)
Title: Oil fired furnace for individual retort furnaces for ceramic purposes
IPC: F23D11/10
Filed: 1966-07-08
Abstract: 1,095,618. Burners. M. LEISENBERG. July 8, 1966 [Aug. 3, 1965], No. 30737/66. Heading F4T. In an oil-fired furnace 1 for ceramic purposes a burner is mounted level with the fire door 9 and has an impulse-operating electromagnetic injection pump 10 with a cyclone forming air supply device 12 adjoined by a mixing chamber 14 enclosing a multi-jet nozzle (13) and with a tubular extension 15 extending into the furnace and a cup burner 6 for light oil is mounted beneath it. The burner is mounted on a ball- and-socket arrangement so that the nozzle may be adjusted for position within the combustion chamber.
Patent GB-1286756-A (GB)
Title: Disposable clinical thermometer
IPC: G01K11/06
Filed: 1970-06-25
Abstract: 1286756 Temperature indicators BIOMEDICAL SCIENCES Inc 25 June 1970 [22 Oct 1969] 30791/70 Heading G1D A disposable thermometer comprises a set of temperature indicating elements 12 each comprising a member 20, e.g. a plastics disc, carrying a mark or number 21 indicative of a predetermined temperature, the mark being obscured by a coating 22 of material opaque at temperatures below the predetermined value but which melts at the predetermined temperature to render the mark 21 visible. As shown, a disposable clinical thermometer has two perforated sheets 13, 14 secured to opposite sides of a carrier sheet 11 of cellulose acetate or polyethylene terephthalate and carrying rows of indicating elements 12, the whole being enclosed in transparent sheets 19. Each element 12 is coated with a different substance, arranged so that successive elements in the set have melting points increasing in 0À2 degrees F steps. The substances are of clear crystalline form when initially applied to the discs 20, the thermometer being passed between rollers after assembly to crush the coatings and render them opaque. Possible substances are menthol; piperonal; 4-phenoxy butyl bromide; 1-indanone; 4- bromoisoquinoline; 3, 5 dimethoxy phenol; 1- bromo 2-nitrobenzene; 3, 3, 5 trimethyl cyclohexanol; benzyl cinnamate; 2 (dibenzylamino) ethanol; 1, 6 hexane diol; 3, 4 dichloro benzaldehyde; p-diethylamino benzaldehyde; 3, 3' dimethoxy biphenyl; 2, nitro biphenyl; o-anisaldehyde; hydroxy benzophenone; 2-chloro 6 nitrotoluene. A batch of thermometers may be made in roll form, each thermometer being detachable by tearing the roll along a perforation line.
Patent GB-1507595-A (GB)
Title: Preparation of azo dyestuffs whilst they are undergoing comminution
IPC: C09B41/00
Filed: 1976-07-23
Abstract: 1507595 Preparing azo dyestuffs whilst undergoing mechanical comminution BAYER AG 23 July 1976 [26 July 1975] 30830/76 Heading C4P A process for the production of an azo dyestuff in a form directly suitable for dyeing comprises diazotizing an aromatic amine and reacting the diazo compound with a coupling component in aqueous dispersion optionally followed by drying, the diazotization and/or coupling being carried out accompanied by mechanical comminution in a stirred ball mill. The diazotization coupling is preferably carried out in the presence of a dispersing agent and the resulting dyestuff suspension or solution is purified by ultrafiltration.
Patent GB-1206537-A (GB)
Title: Flexible coupling member
Inventor: JEWELL HOLLIS
IPC: F16D3/72
Filed: 1968-06-28
Abstract: 1,206,537. Flexible couplings. H. JEWELL, and T. P. MAHONEY. 28 June, 1968, No. 30831/68. Heading F2U. A flexible coupling member comprises a tube having at least one series of equally axially spaced, generally circumferentially extending helical slots 16, Fig. 2, in its wall 12, the slots forming axially spaced helical beams 18 in the wall having greater cross-sectional heights than widths so as to be subject to tensile and compressive flexing upon the tube ends being secured to driving and driven torsional loads. Each tube may have more than one series of helical slots, the slots of each series forming a series of beams of approximately rectangular crosssection. The ends of the slots may lie in a single plane and the slots may extend around 270 degrees of the circumference. In another embodiment an inner tube 50, Fig. 7, is telescoped within an outer tube 54 and the tubes have slots of opposite inclination. In another embodiment the slots are formed in a pin 22, Fig. 5, between a first member 24 and a second member 26.
Patent GB-1117767-A (GB)
Title: Improvements in or relating to agricultural machines
IPC: A01D41/14
Filed: 1965-07-20
Abstract: 1,117,767. Combine harvesters. TEXAS INDUSTRIES Inc. 20 July, 1965 [28 July, 1964; 29 Sept., 1964], No. 30885/65. Heading A1F. [Also in Division B8] An agricultural machine comprises a working member in the form of a mowing mechanism or pick-up device which is arranged to follow undulations in the ground, and includes means for indicating the pressure with which the working member bears on the ground. The illustrated machine is a combine harvester similar to that described in Specification 1,097,864 and comprises a hydraulic system whereby pressure of fluid in the pairs of rams 50 and 74 is kept substantially constant.. A pressure gauge 72 is provided for indicating.the pressure in rams 50 and hence the pressure exerted on the ground by the mowing table. The system includes a valve 53, which controls both of the rams 50 and individual valves 79 for the rams 74. Each valve comprises interconnected pistons 55 and 56 slidable within a housing 54, and urged upwards by a spring 69. The pistons define chambers 58-60 which respectively communicate with one of the rams 50 or 74, tank 63 and pump 67. The pistons are retained in the position shown if the pressure of fluid in chamber 60 is equivalent to pressure of fluid plus spring 69 in chamber 58. In operation, upon encountering any irregularities in the ground the mowing table or portions thereof will move upwardly or downwardly with consequent decrease or increase of pressure of fluid in the rams. The pistons will be moved accordingly to permit flow of fluid to or from the rams. The pressure in the rams may be varied by adjustment of set screws 70. Rods 73 movable downwardly by coaxial cam discs 84, 98 engage pistons 55 in a first position to prevent flow of fluid between the rams and the tank, and in a second position to permit continuous flow of fluid from pump 67 to the rams, thus to raise the mowing table and to effect pivoting inwardly of the two portions of the table. Steps 89 on discs 84, 98 are arranged so that raising of the mowing table will commence before inward pivoting of the portions. The discs 98 are resiliently connected to shaft 85 and are movable independently of or together with disc 84. The hydraulic system further includes gas containers 104 which allow flexibility in the system. Two alternative embodiments (Figs. 1 and 2 and 8-10, not shown) have a single mowing table supported by two hydraulic rams controlled by a single control mechanism. Gas containers associated with each of the hydraulic rams in one embodiment (Figs. 1, 2) may be rendered inoperable by a hand operated piston and cylinder mechanism.
Patent GB-231920-A (GB)
Title: Improvements in or relating to loom picking mechanism
IPC: D03D49/46
Filed: 1923-12-08
Abstract: 231,920. Wilkinson, S. Dec. 8, 1923. Picking-motions; shuttles. - The shuttle is handed across the shed by shuttle carriers comprising forked members 20, Figs. 2 and 7, at each side of the loom slidable in a fixed hollow rod or bar 23 extending across the lay and slotted to receive the end or cross portions 24 of the members 20. These are driven by chains 29 passing over wheels 30, Figs. 1 and 2, associated with toothed wheels 30<A> driven by chains 31 operated by levers 32 from wheels 34 geared to wheels 33 on the low shaft 17, which rotates at the same speed as the crank shalt. The shuttle carriers meet at the centre of the shed, the shuttle being transferred from one shuttle carrier to the other by means of springs 26 engaging slots in the shuttle. These springs are compressed as required to release the shuttle from one or the other carrier by means of rings 26<A> on central steel rods connected to fingers 36. When a shuttle boxes, the swell operates a lever 42, Figs. 1 and 8, which by means of parts 46, 45 moves a catch 35 so that a projection &c. 35<A> thereon is moved into a position in a slot 16<A> to engage the corresponding finger 36 when the corresponding member 20 moves inwards, the catch being meanwhile held in the position to which it has been moved by a locking slide 41. The finger 36 encounters the projection 35<A> and is thereby operated, causing the corresponding rod and ring 26A to move. The ring runs up the flexible flat steel wire constituting the spring 26, thereby compressing this spring and releasing the shuttle from one shuttle carrier to enable it to be taken across the shed from the middle thereof by the other shuttle carrier. The shuttle is released at the end of its traverse by the finger 36 coming into contact with a stationary spring. The stop-rod daggers at each side of the loom are operatively connected together. The slide 41 is operated through lever mechanism 40, 39, 38 to release the catch when the crank-shaft is at top centre. The application of the invention to a loom having a drop box motion is illustrated.
Patent GB-875183-A (GB)
Title: Marking apparatus
IPC: B41F17/26
Filed: 1959-09-11
Abstract: 875,183. Rotary-printing machines. GOTTSCHO Inc., ADOLPH. Sept. 11, 1959 [Nov. 28, 1958], No. 31030/59. Class 100(2) An apparatus for applying markings to successive articles, cartons, containers and the like comprises a marking roller 64 which is driven by the articles &c. conveyed past the roller. The roller 64 is rotatably mounted by a sleeve 68 on a spindle 66 projecting upwardly from a plate 40 carrying rollers 42 engaging grooves 46 in side walls 22 of a housing 20. The plate 40 is adjustably mounted in the housing 20 by a nut 62 on a screwed rod 50 carrying a spring 60. The roller 64 is driven by friction rims 78 and 80 which engage articles A on a conveyer C. The rims 78 and 80 drive the body 70 of the roller 64 through friction clutch discs 82 and 84. The body 70 is releasably held against rotation in a predetermined angular position by a latch 142, Fig. 2, rockable about a pin 144 on the plate 40 into and out of engagement with a notch 146 of the body 70. A lever 148 having a cam surface 152 projecting into the path of an article A is rocked clockwise by passage of this article to cause a leaf spring 162 engaging a shoulder 164 on a member 166 to release the latch 142. Further rocking of the lever 148, upon passage of the article A, causes the spring 162 to move off the shoulder 164 to release the member 166 and latch 142. The latch re-engages the notch 146 when the marking roller has completed one revolution. Rubber type members 100, Fig. 1, are secured to the body 70 by locating plates 102 between rims 96, 98, a portion 106 of the rim 98 being cut away to facilitate insertion and removal of the type members 100 and plates 102. Inking apparatus. The type members 100 are inked by a roller 108 rotatable on a spindle 110 secured to a plate 112, Fig. 2, pivotally mounted on the base 40. The roller 108 is urged into contact with the type members on the roller 64 by a leaf spring 112. A wick 124, Fig. 1, supplies ink from a reservoir within the roller to an annular ink pad 128 of felt surrounding the wick. The pad 128 is disposed between flanges 126 and 130. A cover 132 carrying the flange 130 has a threaded boss 134 engaging threads 136 which can be locked in adjusted position by a nut 138. Adjustment of the cover 132 adjusts the constriction of the wick 124 to vary the ink feed to the pad 128.
Patent GB-632664-A (GB)
Title: Improvements in or relating to electron discharge tube circuit arrangements
IPC: H03F3/32
Filed: 1946-10-18
Abstract: 632,664. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and GREEN, E. Oct. 18, 1946, No. 31118. [Classes 40 (v) and 40 (vi)] In a grounded-grid amplifier stage an effective output impedance which is high relative to the load impedance is obtained by driving the stage from a high impedance source directly or from a low impedance source via an impedance inverting network. The high impedance driving source may be a pentode valve, Figs. 2 and 3 (not shown). Fig. 4 shows two grounded grid valves VI, V1<1> connected in push-pull and driven from two push-pull connected cathode follower stages V2, V2<1> via an impedance inverting network including the tuned circuits L 1, C 1 and DLC. A number of similar groundedgrid valve stages may be connected in cascade the cathode of each tube except the first being capacity coupled to a point on the tuned anode circuit of the preceding stage and the cathodes also connected to earth via a parallel tuned circuit, Fig. 5 (not shown). Fig. 6 shows the grounded-grid amplifier stages of a television transmitter having grid modulation applied to the stages V1, V1<1> from the source M. The cathode tuned circuit L1, C1 forms part of a quarter-wave' impedance inverting network including capacitors C23, C23<1> and the tuned circuit L3, C3. The grounded-grid stages V2, V2<1> present a high output impedance by reason of the high input impedance of the stages obtained by coupling the opposite ends of the tuned circuit L4, C4 through capacitors BC1, BC2 and series resistors SR1, SR2 to the opposite ends of the tuned circuit L5, C5. In this way the stage V2, V2<1> has a high effective output impedance irrespective of the loading on it from the modulator stage V1, V1<1>.